/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dtstack.taier.base.filesystem;

import com.dtstack.taier.base.filesystem.factory.IFileManageFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.List;
import java.util.ServiceLoader;

/**
 * Date: 2020/7/20
 * Company: www.dtstack.com
 * @author maqi
 */
public class FilesystemManageFactoryServiceLoader {
    private static final Logger LOG = LoggerFactory.getLogger(FilesystemManageFactoryServiceLoader.class);

    public static List<IFileManageFactory> findFileManageFactory(Class fileManageFactoryClass) {
        return findFileManageFactory(fileManageFactoryClass, fileManageFactoryClass.getClassLoader());
    }

    private static List<IFileManageFactory> findFileManageFactory(Class fileManageFactoryClass, ClassLoader classLoader) {
        ServiceLoader<IFileManageFactory> serviceLoader;
        if (classLoader != null) {
            serviceLoader = ServiceLoader.load(fileManageFactoryClass, classLoader);
        } else {
            serviceLoader = ServiceLoader.load(fileManageFactoryClass);
        }

        List<IFileManageFactory> matchingFactories = new ArrayList<>();
        serviceLoader
                .iterator()
                .forEachRemaining(matchingFactories::add);

        if (matchingFactories.size() == 0) {
            LOG.info("zero file factory found" + matchingFactories);
        }
        return matchingFactories;
    }
}
